Revision: atoms and ions

Edit Answers
1234567891011121314
Across
  1. 4. the chemical name of OH - is __ ion.
  2. 5. Each row of the periodic table is called _____
  3. 10. An element can have atoms of different number of neutrons, called _________.
  4. 11. the chemical name of CO3 2- is __ ion.
  5. 13. When an atom gains electrons, it becomes an ____.
  6. 14. the chemical name of NH4 + is ____.
Down
  1. 1. the chemical name of SO4 2- is __ ion.
  2. 2. Each column of the periodic table is called ___
  3. 3. the chemical name of NO3 - is __ ion.
  4. 6. the chemical name of O 2- is __ ion.
  5. 7. When an atom becomes charged, it becomes an ____.
  6. 8. The total number of protons and neutrons in an atom is called ________.
  7. 9. the chemical name of Br - is __ ion.
  8. 11. When an atom loses electrons, it becomes an _____.
  9. 12. ______number tells the number of protons in an atom